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Excellent impact resistance of multilayer metallic glass films subjected to micro-ballistic impact by overcoming dynamic size effects

文献类型：期刊论文

作者Cheng, Yujie5,7; Dong, Jinlei1,7; Shen, Yidi3; Li, Fucheng4; An, Qi3; Jiang, Minqiang2,5; Liu, Yanhui4; Huang, Chenguang5; Goddard, William A.6; Wu, Xianqian5,7
刊名EXTREME MECHANICS LETTERS
出版日期2023-09-01
卷号63页码:8
ISSN号2352-4316
关键词Multilayered metallic glass Impact resistance Size effect Micro-ballistic impact Molecular dynamics simulation
DOI10.1016/j.eml.2023.102067
通讯作者Wu, Xianqian(wuxianqian@imech.ac.cn)
英文摘要Size effects are key issues that hinder the enhancement of impact resistance of films with increasing thickness. In this paper, we consider Ni2Ta amorphous metallic alloy as a prototype thin film and demonstrate that the impact resistance of metallic glass (MG) nanofilms with surface oxidation subjected to micro-ballistic impact can be increased significantly by lamination of thin monolayers, overcoming significantly the size effects in the impact resistance of MG nanofilms. Shear band formation and delamination are the dominant energy dissipation mechanisms for multilayered films under impact. Our molecular dynamics (MD) simulations confirmed that the interfaces between thin layers as modified by surface oxidation play an important role in the impact resistance of the multilayered films. Surface oxidation of multilayered films increases significantly the impact resistance due to oxidation-induced curly structure and the increase of the interfacial strength, which contributes greatly to the energy dissipation during impact. However, excessive oxidation initiates defects near the surfaces of the monolayers to therefore reduce greatly impact resistance of the multilayered films. Our work suggests an effective pathway for fabricating high-performance multilayered MG films with extraordinary impact resistance by overcoming the size effects through the lamination of monolayers. (c) 2023 Elsevier Ltd. All rights reserved.
WOS关键词TOTAL-ENERGY CALCULATIONS ; MOLECULAR-DYNAMICS ; SHEAR BANDS ; ARMOR
资助项目National Key R&D Pro-gram of China[2021YFA0719200] ; National Natural Sci-ence Foundation of China[12272391] ; National Natural Sci-ence Foundation of China[12232020] ; Office of Naval Research, United States[N00014-22-S-B001] ; National Outstanding Youth Science Fund Project of National Natural Science Foundation of China[12125206]
WOS研究方向Engineering ; Materials Science ; Mechanics
语种英语
WOS记录号WOS:001077151900001
资助机构National Key R&D Pro-gram of China ; National Natural Sci-ence Foundation of China ; Office of Naval Research, United States ; National Outstanding Youth Science Fund Project of National Natural Science Foundation of China
源URL[http://dspace.imech.ac.cn/handle/311007/93117]  
专题力学研究所_非线性力学国家重点实验室
通讯作者Wu, Xianqian
作者单位1.CAEP, Inst Fluid Phys, Mianyang 621999, Peoples R China
2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
3.Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA
4.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
5.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
6.CALTECH, Mat & Proc Simulat Ctr, Pasadena, CA 91125 USA
7.Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Cheng, Yujie,Dong, Jinlei,Shen, Yidi,et al. Excellent impact resistance of multilayer metallic glass films subjected to micro-ballistic impact by overcoming dynamic size effects[J]. EXTREME MECHANICS LETTERS,2023,63:8.
APA Cheng, Yujie.,Dong, Jinlei.,Shen, Yidi.,Li, Fucheng.,An, Qi.,...&吴先前.(2023).Excellent impact resistance of multilayer metallic glass films subjected to micro-ballistic impact by overcoming dynamic size effects.EXTREME MECHANICS LETTERS,63,8.
MLA Cheng, Yujie,et al."Excellent impact resistance of multilayer metallic glass films subjected to micro-ballistic impact by overcoming dynamic size effects".EXTREME MECHANICS LETTERS 63(2023):8.

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来源：力学研究所

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